Which one of the following is present in the largest amount in terms of percent by mass in the earth's crust? [IAS 1997]

Related MCQs

• Which of the following are true regarding the crust of the earth? 1. It is the outer thin layer with a total thickness of about 100 km 2. It forms around 0.5 percent of the earth's volume 3. The outer covering of the crust is of sedimentary material 4. The lower layer of the crust consists of basaltic and ultra-basic rocks
• Which one of the following is present in the largest amount in terms of per cent by man In the earth's crust?
• Consider the following statements: 1. Nearly 99 percent of the total mass of the atmosphere lies within 30 km of the Earth's surface. 2. The proportion of ozone in the atmosphere increases to a maximum at about 60 km from Earth's surface. Which of the statements given above is/are correct? [IAS 2008]
• Which one of the following factors is responsible for the change in the regular direction of the ocean currents in the Indian Ocean? [IAS 1997]
• The upper part of the mantle upon which the crust of the Earth floats is called: [IAS 2003]
• Which one of the following countries produces the largest amount of crude steel of the world? [IAS 2007]
• One will NOT have to pass through the Suez Canal while going from Bombay to: [IAS 1997]
• Which of the following statements are true regarding distribution of world population? 1. Only 10 percent of the total population lives in the southern hemisphere 2. Nearly two-thirds of the total population live within 500 km of sea 3. Nearly 80 percent of the total population lives within 500 meters altitude above sea level
• If the earth's direction of rotation is reversed, what would be the IST when it is noon at the International Date Line? [IAS 1997]
• The January isotherm taken as a basis for dividing India into tropical and subtropical zones is : [IAS 1997]